I tried it, it was very relaxing and helped me to fall asleep. I didnt have one o.b.e. during the time I used it, which was about every day for 2 weeks. Usually I don't need or use such props but I was going through a "dry spell" and thought it would help me out. I find that it is great when you need to hear that white noise to shut out the sounds of noisy roommates so you can get some sleep! I didnt experiment with any custom presets, just played around with the ones included in the free download.